Question

the sum of the digits of a two digit number is 12.if the new number formed by reversing the digits is greater than the original number by18, find the original number .check your solution and the options are 55, 53, 59, 57

Answer 1

Answer:

we can check with each option

a)55

sum of digits=

5+5=10

We need 12, so 55 is not the number

b) 53

sum of digits=

5+3=8

But we need 12, so 53 is not the number

c) 59

sum of digits=

5+9=14

We need 12, so 59 is not the number

d) 57

sum of digit =

5+7 = 12

1st condition reached

Now reverse the digits

57=75

75-57 = 18

2nd condition is reached

So.. 57 is the number